UNS S31803 Tube
UNS S31803 Tube introduction
Duplex UNS S31803 is the most common duplex grade in the market with high mechanical strength. It is widely used in Oil & Gas Industry, hydro power, pressure vessels, pulp & Equipment for the Paper Industry, Paper Industry, structural components and chemical tankers. The alloy is not intended to be used at temperatures above 300°C due to embrittlement.
Equivalent material: EN 1.4462, UNS S31803, UNS S32205, ASTM A182 Grade F51, ASTM A182 Grade F60
UNS S31803 Tube general
| Property |
Value |
| Diameter |
Diameter of 32 - 250 mm |
UNS S31803 Tube chemical
| Property |
Value |
| Carbon |
Carbon of 0.03 % |
| Chromium |
Chromium of 21 - 23 % |
| Iron |
Balance |
| Manganese |
Manganese of 2 % |
| Molybdenum |
Molybdenum of 2.5 - 3.5 % |
| Nickel |
Nickel of 4.5 - 6.5 % |
| Nitrogen |
Nitrogen of 0.1 - 0.22 % |
| Phosphorus |
Phosphorus of 0.03 % |
| Silicon |
Silicon of 1 % |
| Sulfur |
Sulfur of 0.015 % |
UNS S31803 Tube mechanical
| Property |
Temperature |
Value |
| Charpy impact energy, V-notch |
-46.0 °C |
Charpy impact energy, V-notch of 45 J |
| Elongation |
23.0 °C |
Elongation of 25 % |
| Hardness, Brinell |
23.0 °C |
Hardness, Brinell of 270 [-] |
| Tensile strength |
23.0 °C |
Tensile strength of 650 - 880 MPa |
| Yield strength Rp0.2 |
23.0 °C |
Yield strength Rp0.2 of 450 MPa |
From sourcing to delivery, we are your trusted partner, offering comprehensive steel solutions tailored to your requirements.
-- Our promise
Similar or equivalent steel materials
Get a quote